The Extraction of Copper from Chalcopyrite Concentrate with Hydrogen Peroxide in Sulfuric Acid Solution

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dc.citation.issue11
dc.citation.rankM22
dc.citation.spage1818
dc.citation.volume13
dc.contributor.authorPetrović, Sanja
dc.contributor.authorBogdanović, Grozdanka
dc.contributor.authorAntonijević, Milan
dc.contributor.authorVukčević, Marija
dc.contributor.authorKovačević, Renata
dc.date.accessioned2023-12-25T21:47:17Z
dc.date.available2023-12-25T21:47:17Z
dc.date.issued2023
dc.description.abstractResearch on chalcopyrite leaching represents a great challenge, given its importance as one of the most abundant copper minerals and its significant role in global copper extraction. This study aimed to evaluate the effects of different parameters on chalcopyrite leaching by hydrogen peroxide as a strong oxidizing reagent in sulfuric acid solution. A series of leaching tests were carried out to investigate the effect of the solid/liquid ratio, stirring speed, temperature, oxidant and acid concentrations, and lixiviant dosing method on copper extraction from chalcopyrite concentrate. The catalytic decomposition of hydrogen peroxide occurred in the investigated leaching system, as reflected in the obtained metal extraction values. Copper extraction was increased in the first 60 min of the reaction, after which it essentially ceased. The maximum final copper extraction of 64.5% was attained with 3.0 mol/L H2O2 in 3.0 mol/L H2SO4 at a temperature of 40 C after 120 min of reaction. Due to the catalytic decomposition of hydrogen peroxide in the examined leaching system, the leaching experiment was performed with the periodic addition of lixiviant at specific time intervals as well. The dissolution process was described by the first-order kinetics equation with an apparent activation energy of ~39 kJ/mol. Finally, XRD and SEM-EDS analyses were used to characterize the leached residue, and the results showed that the formation of elemental sulfur on the chalcopyrite surface affected the dissolution process.
dc.identifier.doi10.3390/met13111818
dc.identifier.urihttps://www.mdpi.com/2075-4701/13/11/1818
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/796
dc.language.isoen
dc.publisherMDPI, Switzerland
dc.rights.licenseCC-BY
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceMetals
dc.subjectchalcopyrite
dc.subjectleaching
dc.subjecthydrogen peroxide
dc.subjectsulfuric acid
dc.subjectkinetics
dc.subjectXRD
dc.subjectSEM-EDS
dc.subjectsulfur
dc.titleThe Extraction of Copper from Chalcopyrite Concentrate with Hydrogen Peroxide in Sulfuric Acid Solution
dc.typearticle
dc.type.versionpublishedVersion

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